311221032210023 has 4 divisors (see below), whose sum is σ = 335161111610808. Its totient is φ = 287280952809240.

The previous prime is 311221032209999. The next prime is 311221032210083. The reversal of 311221032210023 is 320012230122113.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 311221032210023 - 2²² = 311221028015719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311221032210083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11970039700373 + ... + 11970039700398.

It is an arithmetic number, because the mean of its divisors is an integer number (83790277902702).

Almost surely, 2^{311221032210023} is an apocalyptic number.

311221032210023 is a deficient number, since it is larger than the sum of its proper divisors (23940079400785).

311221032210023 is a wasteful number, since it uses less digits than its factorization.

311221032210023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23940079400784.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 311221032210023 its reverse (320012230122113), we get a palindrome (631233262332136).

The spelling of 311221032210023 in words is "three hundred eleven trillion, two hundred twenty-one billion, thirty-two million, two hundred ten thousand, twenty-three".